There is NO coupling between the file name and the name of the module.
We can define this code where and how we want.

Now let’s make this helper available to use by editing our app’s application.rb. First, add that new helpers directory to the load paths of the application so it can be eagerly loaded. Second, include the Web::Helpers::Shuffler module in all the views. See the Views: Share Code section for low-level details.